The cold war was a long conflict between the united states and the soviet union. during the cold war, the berlin wall split berlin, germany in half. the wall was torn down, and germany reunified in 1990

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try looking in the very back of the book : )

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consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without